WO2018028248A1

WO2018028248A1 - Cylindrical intense field dielectric filter

Info

Publication number: WO2018028248A1
Application number: PCT/CN2017/081957
Authority: WO
Inventors: 刘俊杰; 张志伟; 陈文华
Original assignee: 天津大学
Priority date: 2016-08-11
Filing date: 2017-04-26
Publication date: 2018-02-15
Also published as: CN106076625B; US10843206B2; CN106076625A; US20190126289A1

Abstract

A cylindrical intense field dielectric filter (1), comprising a dust collection module (3) and an electric field module (2) disposed in a middle channel of the dust collection module (3) and spaced apart therefrom. Multiple electric field module units (6) are disposed on a side wall of the electric field module (2) and vertically spaced apart and symmetrical. Multiple dust collection module channels (9) vertically connected are provided on and run through the dust collection module (3). The vertically adjacent dust collection module channels (9) have partition walls alternately configured as positive plates (9-3) and negative plates (9-4). A partition wall (9-6) between the vertically adjacent dust collection module channels (9) comprises a metal plate electrode (9-6-2) and plate surface coatings (9-6-1) coated on an upper surface and a lower surface of the metal plate electrode (9-6-2). The same material as the plate surface coatings (9-6-1) is selected and used for partition walls (9-5) between two horizontally adjacent dust collection module channels.

Description

Cylindrical micro electrostatic filter

Technical field

The invention relates to the field of ventilation purification, and in particular to a cylindrical micro-electrostatic filter.

Background technique

With the improvement of people's living standards, indoor air quality has attracted more and more attention. Indoor air quality directly affects the health and comfort of the human body. Due to the increase in the sources and types of indoor pollutants and the increase in the degree of containment of buildings, the opportunities for indoor populations to contact with pollutants increase, and the use of air purification and fresh air equipment can effectively improve indoor air quality. In recent years, environmental problems such as haze and dust storms have become more serious, which puts higher demands on the technologies of air purification and fresh air systems.

Micro-electrostatic technology, the English full name of Intense Field Dielectric, refers to the use of dielectric materials as a carrier of the strong electric field. The dielectric material forms a honeycomb microchannel that wraps the electrode sheet to form a strong electric field within the channel. It exerts a great attraction to the charged particles moving in the air, and can absorb almost 100% of the moving particles in the air while generating only the minimum airflow impedance, and the removal effect of particulate pollutants such as PM2.5 is particularly remarkable. At the same time, bacteria, microorganisms, and the like attached to the particulate matter can be collected and killed in a strong electric field, and have an efficient sterilization function.

The Chinese utility model patent CN 104697103 A proposes a fresh air ventilator with electrostatic precipitator function, comprising: a casing, an air inlet duct, an exhaust duct, a heat exchange core and a filter assembly, and the filter assembly comprises a micro electrostatic precipitator And ozone adsorption plate. Disadvantages of this design: 1) The micro-static charge module and the micro-electrostatic purification filter are both flat structures, which limits its application range; 2) The filtration efficiency of the filter components increases with time and decreases rapidly.

The Chinese utility model patent CN204404405 U proposes a micro-static central air-conditioning air-type air purifying device, which comprises: a casing, a primary effect filter, a field power module and a micro-electrostatic module. Disadvantages of the design: 1) The field power module and the micro-electrostatic module are both flat structures, which limits its application range; 2) the filtering efficiency increases with time and decreases rapidly.

China utility model patent CN204739693 U proposes a micro-electrostatic purification device for four-sided air outlet VRV air conditioner, including: housing, air inlet, air outlet, primary effect module, micro-electrostatic purification unit and air quality monitoring module. The design Disadvantages: 1) The fan and the micro-electrostatic purification unit are independent of each other, the airflow in the air conditioner is poor, and the resistance is large; 2) the micro-electrostatic purification unit is a flat structure, which is not used in combination with the fan; 3) the micro-electrostatic purification unit Filtration efficiency increases with time and decreases rapidly.

The quality of indoor air is a prominent issue of people's livelihood that is generally faced and cared by Chinese urban residents at this stage, and it is related to the health and vital interests of hundreds of millions of people. In order to improve the air quality of people living and working places, there is an urgent need for ventilation equipment with filtration performance. Throughout the past decade and beyond, the technologies of air purification and fresh air systems face the following challenges: 1) Comfort – indoor ventilation systems require low noise and controlled airflow organization, while along with outdoor air quality Decrease, need to purify and heat treatment of fresh air; 2) Safety - air purification and fresh air system should not produce harmful by-products while treating air; 3) high efficiency - air purification and fresh air system can continue Efficient treatment of air pollutants and easy maintenance; 4) Intelligence - Air purification and fresh air system can intelligently adjust operating conditions according to indoor and outdoor air quality to meet indoor air quality requirements under different conditions; 5) Aesthetics - Air purification and fresh air systems are able to perform their functions without compromising the aesthetics and integrity of the interior and exterior of the building.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and to provide a cylindrical micro-electrostatic filter capable of achieving an increase in filtration efficiency and a small attenuation, and capable of introducing air in the middle and exhausting air in the surroundings.

In order to achieve the above object, the present invention provides a cylindrical micro-electrostatic filter, comprising a dust collecting module and a field electric module disposed in an intermediate passage of the dust collecting module, wherein the dust collecting module and the field electric module support setting On the insulating plate and having a circular cross section, the field electric module and the dust collecting module are both of the same height and coaxially arranged, and are vertically and symmetrically disposed on the side wall of the field electric module. a plurality of field-electric module units, each of the field-electric module units includes a discharge electrode conductive ring and a plurality of discharge cavities disposed at sidewalls of the field electric module and having the same height, and the discharge electrode conductive rings are disposed in each field a plurality of discharge cavities of the electrical module unit, wherein a discharge electrode is soldered to an intermediate position of each of the discharge cavities on the discharge electrode conductive ring, and each of the discharge electrodes is inserted in a correspondingly disposed discharge cavity The discharge conductive rings of the plurality of field electric module units are connected by a metal rod to form a negative pole of the field electric module power supply, and the outer wall of the field electric module and the metal rod Or the wires are connected to form a positive pole of the power supply module of the field electrical module; a multi-circle dust collecting module channel connected to the upper and lower sides is arranged through the dust collecting module, and each of the dust collecting module channels includes a plurality of dust collecting ends connected in sequence The module channel, the plurality of dust collecting module channels of the multi-circle dust collecting module channel are vertically arranged, and each dust collecting module channel is divergent, along the air inlet of the dust collecting module channel to the air outlet of the dust collecting module channel The cross-sectional area of the directional passage is gradually increased, and the air inlet and the air outlet of the dust collecting module passage are both curved, and the partition walls of the dust collecting module passages adjacent to each other are alternately arranged as a positive electrode plate and a negative electrode plate, all The positive electrode plate is connected to the positive electrode of the dust collecting module through the wires, and all the negative electrode plates are connected to each other through the wires to form a negative electrode of the dust collecting module, and the positive electrodes of the plurality of dust collecting modules are connected to the first wire, and the plurality of sets are connected. The negative electrode of the dust module power supply is commonly connected to the second wire, and the partition wall between the channels of the dust collecting module adjacent to each other includes a plate metal electrode and is respectively coated on the Coating the metal electrode plate surface of the plate top and bottom walls, the two channel walls adjacent to the left and right selection and the dust collecting electrode plate modules of the same surface coating material.

The beneficial effects of the invention are as follows: (1) the particulate contaminant has a larger charge amount and the filtration efficiency is higher; (2) along the air flow direction, the cross-sectional area of the dust collection module channel gradually increases, and the air flow rate gradually decreases. When the dust collecting voltage is constant, the filtration efficiency will gradually increase, which is more significant for small particles; (3) the filtration efficiency decreases slowly with time; (4) It is applied to the middle air inlet and the surrounding air outlet. Air purification equipment expands the scope of application of air purification equipment; (5) Field power modules and dust collection modules can be designed to meet different practical needs.

DRAWINGS

1 is a structural view of a cylindrical micro-electrostatic filter according to Embodiment 1 of the present invention;

2 is a structural diagram of a field micro-electrostatic filter field electric module according to Embodiment 1 of the present invention;

3 is a structural diagram of a cylindrical micro electrostatic filter dust collecting module according to Embodiment 1 of the present invention;

4 is a structural diagram of a field micro-electrostatic filter field electric module unit according to Embodiment 1 of the present invention;

5 is a structural diagram of a channel of a dust collecting module of a cylindrical micro-electrostatic filter according to Embodiment 1 of the present invention;

6 is a structural view showing a discharge electrode of a cylindrical micro-electrostatic filter according to Embodiment 1 of the present invention;

7 is another structural diagram of a cylindrical micro electrostatic filter discharge electrode according to Embodiment 1 of the present invention;

8 is a structural view of a cylindrical micro-electrostatic filter plate according to Embodiment 1 of the present invention;

9 is a structural view of a cylindrical micro-electrostatic filter according to Embodiment 2 of the present invention;

10 is a structural diagram of a field micro-electrostatic filter field electric module according to Embodiment 2 of the present invention;

11 is a structural diagram of a field micro-electrostatic filter field electric module unit according to Embodiment 2 of the present invention;

12 is a structural view showing a discharge electrode of a cylindrical micro-electrostatic filter according to Embodiment 2 of the present invention;

FIG. 13 is another structural diagram of a cylindrical micro electrostatic filter discharge electrode according to Embodiment 2 of the present invention.

Figure 14 is a schematic diagram of a micro-technique in a cylindrical micro-electrostatic filter provided by the present invention.

detailed description

The invention is described in detail below with reference to the drawings and specific embodiments.

A cylindrical micro-electrostatic filter 1 of the present invention, as shown in the accompanying drawings, includes a dust collecting module 3 and a field electric module 2 disposed in an intermediate passage of the dust collecting module 3, the dust collecting module 3 The field electric module 2 is supported on the insulating plate and has a circular cross section. The field electric module 2 and the dust collecting module 3 are both of the same height and are arranged coaxially. A plurality of field electrical module units 6 are disposed on the sidewall of the field electrical module 2, and each of the field electrical module units 6 includes a discharge electrode conductive ring 6-3 and a sidewall of the through-field electrical module 2 a plurality of discharge cavities 6-1 are provided and having the same height, and the discharge electrode conductive rings 6-3 are disposed at a plurality of discharge cavities 6-1 of each field electric module unit 6, A discharge electrode 6-2 is soldered to the intermediate position of the electrode conductive ring 6-3 corresponding to each of the discharge cavities 6-1, and each of the discharge electrodes 6-2 is inserted into the correspondingly disposed discharge cavity 6-1. . The discharge conductive ring 6-3 of the plurality of field-electric module units 6 is connected to the negative pole 5 of the field-electric module by a metal rod. The outer wall of the field-electric module 2 is connected to the metal rod or the wire to form the positive pole of the field power module. In use, the field power module power supply positive pole 4 and the field power module power source negative pole 5 are connected to the field power module high voltage power source, and the field power module high voltage power source is DC power supply or pulse power supply. The discharge electrode 6-2 has a needle shape or a mace shape, and the discharge cavity 6-1 has a circular, square or square shape with rounded corners.

A plurality of dust collecting module passages 9 connected in a vertical direction are arranged through the dust collecting module 3, and each of the dust collecting module passages 9 includes a plurality of dust collecting module passages 9 connected in sequence from left to right. Multiple dust collection module channels 9 of module channel 9 Aligning up and down, each dust collecting module channel 9 is divergent, and the cross-sectional area of the air passage 9-1 along the air inlet 9-1 of the dust collecting module channel 9 to the air outlet 9-2 of the dust collecting module channel 9 is gradually increased. The air inlet 9-1 and the air outlet 9-2 of the dust collecting module passage 9 are both curved, and the partition walls of the dust collecting module passages 9 adjacent to each other are alternately arranged as the positive electrode plate 9-3 and The negative electrode plate 9-4, all of the positive electrode plates 9-3 are connected to each other to form a dust collecting module power supply positive electrode 7, and all of the negative electrode plates 9-4 are connected by wires to form a dust collecting module power supply negative electrode 8, a plurality of The positive poles 7 of the dust collecting module are connected to the first wire in common, and the negative poles 8 of the plurality of dust collecting modules are connected to the second wire in common, and the partition wall 9-6 between the channels 9 of the dust collecting module adjacent to the upper and lower sides (as shown in the figure) The partition wall as the positive electrode plate 9-3 and the partition wall 9-4 as the negative electrode plate 9-4 each include a plate metal electrode 9-6-2 and are respectively coated on the top of the plate metal electrode 9-6-2 The surface of the wall and the bottom wall of the plate is coated 9-6-1. In use, the dust collecting module power supply positive pole 7 and the dust collecting module power supply negative pole 8 are connected to the dust collecting body. High voltage power supply block, block the dust or pulse high-voltage power supply is a DC power supply. The plate metal electrode 9-6-2 is made of copper, steel or aluminum, and the surface coating of the plate is 9-6-1, which is made of PVC, PTFE or ceramic, and the channels of the two dust collecting modules adjacent to each other. The partition 9-5 is made of the same material as the electrode surface coating 9-6-1.

As an embodiment of the present invention, the discharge electrode conductive ring 6-3 is sleeved outside the field electric module 2, or as shown in FIG. 9 to FIG. 13, the structure of the embodiment is basically the same as that of the embodiment 1, except that the difference is that The discharge electrode conductive ring 6-3 described in this embodiment is disposed in the intermediate channel of the field electric module 2.

The working process of this device is as follows:

As shown in FIG. 2 and FIG. 4, the field device high voltage power supply supplies power to the discharge electrode conductive ring 6-3 through the negative electrode 5 of the field power module, thereby charging the discharge electrode 6-2. The high voltage power supply of the module is connected to the positive pole 4 of the field power module, so that the positive pole 4 of the field power module is charged, and the high-intensity uneven electric field is formed between the discharge electrode 6-2 and the positive pole 4 of the field power module. Thereby, the discharge electrode 6-2 is discharged in the discharge cavity 6-1. When air flows through the field circuit module 2, particulate contaminants in the air are charged and enter the dust collecting module 3. As shown in FIG. 3 and FIG. 5, the high-voltage power supply of the dust collecting module supplies power to the positive electrode plate 9-3 through the positive electrode 7 of the dust collecting module, and the high-voltage power supply of the dust collecting module passes through the negative electrode 8 of the dust collecting module. The negative electrode plate 9-4 is supplied with power, and a high-intensity uniform electric field is formed between the positive electrode plate 9-3 and the negative electrode plate 9-4. Air enters the dust collection module passage 9 from the air inlet 9-1, and the charged particulate pollutants are electrically The positive electrode plate 9-3 is moved by the field force and trapped, and the cleaned air is discharged from the air outlet 9-2. As shown in FIG. 5, the dust collecting module passage 9 is in a divergent shape, and the cross-sectional area of the passage gradually increases along the direction from the air inlet 9-1 to the air outlet 9-2, and the air flow rate is gradually decreased. In the case where the dust collecting voltage is constant, the filtration efficiency will gradually increase, and it is more remarkable for small particles.

Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the specific embodiments described above, and the invention can also be applied to a combination of air purifiers such as air purifiers and new air blowers, and can be more efficient. The advantages of high and low attenuation can meet the requirements of air intake and ambient air blowing in air purification equipment, and expand the scope of application of air purification equipment.

Claims

A cylindrical micro-electrostatic filter, comprising: a dust collecting module and a field electric module disposed in an intermediate passage of the dust collecting module, wherein the dust collecting module and the field electric module are supported on the insulating plate And the cross-section is circular, the field electric module and the dust collecting module are both the same height and coaxially disposed, and a plurality of field electric fields are vertically and symmetrically arranged on the sidewall of the field electric module. a module unit, each field electric module unit includes a discharge electrode conductive ring and a plurality of discharge cavities disposed at sidewalls of the field electric module and having the same height, wherein the discharge electrode conductive ring is disposed in each field electric module unit a plurality of discharge cavities, a discharge electrode is soldered to the intermediate position of each of the discharge cavities on the discharge electrode conductive ring, and each of the discharge electrodes is inserted in a correspondingly disposed discharge cavity, and a plurality of The discharge electrode of the field electric module unit is connected to the negative pole of the power supply of the field electric module by a metal rod, and the outer wall of the field electric module is connected with the metal rod or the wire to form a positive pole of the power supply of the field electric module; The dust module is provided with a plurality of dust collecting module channels connected up and down, and each of the dust collecting module channels includes a plurality of dust collecting module channels connected in sequence, and a plurality of dust collecting module channels of the multi-circle dust collecting module channel. Aligning up and down, each dust collecting module channel is divergent, and the cross-sectional area of the air passage along the air inlet of the dust collecting module channel to the air outlet of the dust collecting module channel is gradually increased, and the dust collecting module channel is The air inlet and the air outlet are both arc-shaped, and the partition walls of the dust collecting module passages adjacent to each other are alternately arranged as a positive electrode plate and a negative electrode plate, and all the positive electrode plates are connected by wires to form a positive electrode of the dust collecting module. All the negative plates are connected to each other to form a negative electrode of the dust collecting module through the wires, and the positive electrodes of the plurality of dust collecting modules are connected to the first wire, and the negative electrodes of the plurality of dust collecting modules are connected to the second wire, and the upper and lower adjacent ones are connected. The partition wall between the channels of the dust collecting module includes a plate metal electrode and a surface coating of the top plate and the bottom wall respectively coated on the metal plate of the electrode plate, left Two channel walls adjacent to the dust collecting electrode plate modules selection and the same surface coating material.
The cylindrical microelectrostatic filter according to claim 1, wherein the discharge electrode has a needle shape or a mace shape.
A cylindrical microelectrostatic filter according to claim 1 or 2, wherein the discharge cavity is in the form of a circle, a square or a square with rounded corners.
The cylindrical micro-electrostatic filter according to claim 3, wherein the discharge electrode conductive ring is sleeved outside the field electric module.
The cylindrical micro-electrostatic filter according to claim 3, wherein said discharge electrode is provided with a conductive ring Placed in the middle channel of the field power module.
The cylindrical micro-electrostatic filter according to claim 3, wherein the material of the electrode metal electrode is one selected from the group consisting of copper, steel or aluminum.
The cylindrical micro-electrostatic filter according to claim 3, wherein the material of the surface coating of the electrode plate is one of PVC, PTFE or ceramic.